Tandem copper and gold nanoclusters for two-color ratiometric explosives detection.
Tandem copper and gold nanoclusters for two-color ratiometric explosives detection.
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DOI：
10.1039/c7an01867c
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发表时间：
2018-02-26
期刊：
影响因子：
--
通讯作者：
Baker GA
中科院分区：
文献类型：
--
作者：
Essner JB ;Chen X ;Wood TD ;Baker GA
我们报告了一个用于确定常见爆炸物种类（例如，TNT、PETN、RDX）的发光金属纳米团簇。特别是，而牛血清白蛋白保护的金纳米团簇的红色发射强烈淬灭硝基，硝酸盐，和含有爆炸性有机分子的亚硝胺，蓝色发光谷胱甘肽封端的铜纳米团簇证明惰性淬灭这些相同的分析物，而不是显示聚集诱导的发射增强（AIEE）的证据。因此，这种离散的金/铜纳米团簇配对提供了一种双探针，比率（红到蓝）系统，表明TNT和其他常见爆炸物的存在。这一策略为基于纳米簇的分析物信号传导开辟了新的潜力，也对荧光共振能量转移（FRET）策略产生了影响。介绍了一种由离散的金和铜金属纳米团簇组成的双发射平台，用于炸药的比率荧光检测。
We report a sensory platform for the determination of common explosive species (e.g., TNT, PETN, RDX) based on the differential response from two different luminescent metal nanoclusters. In particular, whereas the red emission from bovine serum albumin-protected gold nanoclusters was strongly quenched by nitro-, nitrate-, and nitroamine-containing explosive organic molecules, blue-emitting glutathione-capped copper nanoclusters proved inert to quenching by these same analytes, instead showing evidence for aggregation-induced emission enhancement (AIEE). As a result, this discrete gold/copper nanocluster pairing provides a dual-probe, ratiometric (red-to-blue) system signaling the presence of TNT and other common explosives. This strategy opens up new potential for nanocluster-based analyte signaling, with implications to fluorescence resonance energy transfer (FRET) strategies as well. A dual-emission platform comprising discrete gold and copper metal nanoclusters is introduced for the ratiometric fluorescence detection of explosives.
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